Out from Premiere and into Avid ... at DVinfo.net

George Tasick · November 16th, 2008, 11:35 AM

I have to deliver some HDV files that I originally imported into Premiere to a customer who wants to use them in Avid.

What format coming out of Premiere would best accomplish this?

Thanks

Cliff Etzel · January 11th, 2009, 02:06 PM

My understanding is to download the free DNxHD codecs, export the clips in Quicktime format using one of the AVID Editing codecs options.

Your client should be able to bring them into AVID no problem - although I have no first hand experience on this.

David Parks · January 12th, 2009, 09:23 AM

George,

Cliff is right. Specifically, you would export QT DNXHD 145.

Cheers, David

Perrone Ford · January 12th, 2009, 10:06 AM

Out of curiousity, why 145? Because it's 60i?

Bill Ravens · January 12th, 2009, 11:54 AM

The level of DNxHD you choose is really dependent on the bitrate of the incoming file. Hence, DNx145 is 145Mbps, good for 720p60/8 bit or 1080i/60 8 bit. If you want to go to 1080p/24, then DNx175 is called for. then Certain DNxHD bitrates even have the option for 10 bit, which is nice if you're doing any transitions/FX processing.

Perrone Ford · January 12th, 2009, 11:56 AM

Quote:

Originally Posted by Bill Ravens

The level of DNxHD you choose is really dependent on the bitrate of the incoming file. Hence, DNx145 is 145Mbps, good for 720p60/8 bit or 1080i/60 8 bit. If you want to go to 1080p/24, then DNx175 is called for. then Certain DNxHD bitrates even have the option for 10 bit, which is nice if you're doing any transitions/FX processing.

I'm familiar with the system, but there is no way an 1080i HDV file is anywhere near 145 Mbps. That's why I was curious how the bitrate was chosen. I know that 145 is the 8-bit recommendation for lowest quality 1080/30i

Bill Ravens · January 12th, 2009, 12:14 PM

Just quoting from the Avid Help page. No such thing as 30i. It's called 60i (29.97 frames per sec)

Perrone Ford · January 12th, 2009, 12:23 PM

Quote:

Originally Posted by Bill Ravens

Just quoting from the Avid Help page. No such thing as 30i. It's called 60i (29.97 frames per sec)

Sorry, the 30i was a typo. Avid's DNxHD codec whitepaper gives a chart with all the bitrates on it, and the supposed frame sizes, frame rates, and Mbps rates that correspond. For 1080/60i the rates given are 145, 220, and 220x (10-bit).

I was merely curious if the 145 was chosen because of this. I've found VERY little degradation of the original signal going from my EX1's 35 Mbps original to the DNxHD 36 Mbps encoding. So moving to a 145 seemed like a LOT just to hold HDV.

David Parks · January 12th, 2009, 01:14 PM

DNXHD 145TR (TR stands for transport stream) is the bitrate for 1080i HDV in Avid Media Composer using "smart splicing".

If you were to import a m2t into a 1080i HDV project, then your file would show up at that bit rate if you preserve original resolution (dialog appears on import). If you have setup a "full raster" 1080i project, then you can pick whatever bitrate you want(8 or 10bit) , but the file would be transcoded, which is not really a bad thing. It just depends on what your doing and where you are going.

Hope this helps, David

November 16th, 2008, 11:35 AM	#1
George Tasick Regular Crew Join Date: Jan 2008 Location: Zelienople, PA Posts: 86	Out from Premiere and into Avid ... I have to deliver some HDV files that I originally imported into Premiere to a customer who wants to use them in Avid. What format coming out of Premiere would best accomplish this? Thanks

January 11th, 2009, 02:06 PM	#2
Cliff Etzel Major Player Join Date: May 2006 Location: Eugene, Oregon Posts: 325	My understanding is to download the free DNxHD codecs, export the clips in Quicktime format using one of the AVID Editing codecs options. Your client should be able to bring them into AVID no problem - although I have no first hand experience on this. __________________ Cliff Etzel - Photographer Website \| Blog

January 12th, 2009, 09:23 AM	#3
David Parks Major Player Join Date: Feb 2006 Location: Houston Posts: 789	George, Cliff is right. Specifically, you would export QT DNXHD 145. Cheers, David __________________ David Parks: DP/Editor: Jacobs Aerospace at NASA Johnson Space Center https://www.youtube.com/user/JacobsESCG

January 12th, 2009, 10:06 AM	#4
Perrone Ford Inner Circle Join Date: Nov 2006 Location: Tallahassee, FL Posts: 4,100	Out of curiousity, why 145? Because it's 60i? __________________ DVX100, PMW-EX1, Canon 550D, FigRig, Dell Octocore, Avid MC4/5, MB Looks, RedCineX, Matrox MX02 mini, GTech RAID, Edirol R-4, Senn. G2 Evo, Countryman, Moles and Lowels.

January 12th, 2009, 01:14 PM	#9
David Parks Major Player Join Date: Feb 2006 Location: Houston Posts: 789	DNXHD 145TR (TR stands for transport stream) is the bitrate for 1080i HDV in Avid Media Composer using "smart splicing". If you were to import a m2t into a 1080i HDV project, then your file would show up at that bit rate if you preserve original resolution (dialog appears on import). If you have setup a "full raster" 1080i project, then you can pick whatever bitrate you want(8 or 10bit) , but the file would be transcoded, which is not really a bad thing. It just depends on what your doing and where you are going. Hope this helps, David __________________ David Parks: DP/Editor: Jacobs Aerospace at NASA Johnson Space Center https://www.youtube.com/user/JacobsESCG

January 12th, 2009, 11:54 AM	#5
Bill Ravens Join Date: Nov 2001 Location: santa fe, nm Posts: 3,264 Images: 10	The level of DNxHD you choose is really dependent on the bitrate of the incoming file. Hence, DNx145 is 145Mbps, good for 720p60/8 bit or 1080i/60 8 bit. If you want to go to 1080p/24, then DNx175 is called for. then Certain DNxHD bitrates even have the option for 10 bit, which is nice if you're doing any transitions/FX processing.

January 12th, 2009, 12:14 PM	#7
Bill Ravens Join Date: Nov 2001 Location: santa fe, nm Posts: 3,264 Images: 10	Just quoting from the Avid Help page. No such thing as 30i. It's called 60i (29.97 frames per sec)